Mass per volume density.
Pound per Cubic inches to Hectograms per Gallon Converter — lb/in3 to hg/gal
Convert Pound per Cubic inch (lb/in3) to Hectogram per Gallon (hg/gal) using the exact conversion factor (1 pound per cubic inch = 1,047.798375 hectogram per gallon). See the formula, worked examples, conversion table, and common uses.
Pound per Cubic inches to Hectograms per Gallon converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 27679.90471 / 26.41720524.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pound per Cubic inches to Hectograms per Gallon
Pound per Cubic inch and Hectogram per Gallon both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Pound per Cubic inch is most often used for used in machining and materials engineering, particularly for describing the density of metals, where a smaller volume unit than the cubic foot gives a more convenient figure.
Formula
hectograms per gallon = pound per cubic inches × 1047.7983747
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic inch equals 27679.9047102 base units, and 1 hectogram per gallon equals 26.4172052358 base units, so dividing one by the other gives the direct pound per cubic inch-to-hectogram per gallon factor of 1047.7983747.
Simple example
1 lb/in3 × 1047.798375 = 1,047.798375 hg/gal
1 pound per cubic inch = 1,047.798375 hectograms per gallon.
Real-world example
1,000 lb/in3 × 1047.798375 = 1,047,798.375 hg/gal
1,000 pound per cubic inches = 1,047,798.375 hectograms per gallon.
Conversion table
| Pound per Cubic inch (lb/in3) | Hectogram per Gallon (hg/gal) |
|---|---|
| 0.1 lb/in3 | 104.7798375 hg/gal |
| 1 lb/in3 | 1,047.798375 hg/gal |
| 10 lb/in3 | 10,477.98375 hg/gal |
| 100 lb/in3 | 104,779.8375 hg/gal |
| 1,000 lb/in3 | 1,047,798.375 hg/gal |
| 10,000 lb/in3 | 10,477,983.75 hg/gal |
Reverse conversion: Hectogram per Gallon to Pound per Cubic inch
1 hg/gal × 0.0009543820874 = 0.0009543821 lb/in3
1 hectogram per gallon = 0.0009543821 pound per cubic inches.
pound per cubic inches = hectograms per gallon × 0.00095438208738
For a page dedicated to this direction, see Hectogram per Gallon to Pound per Cubic inch.
Understanding the Pound per Cubic inch
Pound per Cubic inch (lb/in3) measures density. A US customary density unit suited to describing dense materials in a small volume. It is classified as a US customary density unit.
Where it's used: United States
Uses of the Pound per Cubic inch today
- Used in machining and materials engineering, particularly for describing the density of metals, where a smaller volume unit than the cubic foot gives a more convenient figure
Understanding the Hectogram per Gallon (hg/gal)
Mass per volume density.
Pound per Cubic inch — sources
- US materials-engineering reference tables — Pounds per cubic inch is a commonly tabulated density unit for metals in US machining and materials references.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectograms per gallon are in 1 pound per cubic inch?
1 pound per cubic inch equals 1,047.798375 hectograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic inch to hectogram per gallon?
Multiply the pound per cubic inch value by 1047.798375. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per gallon back to pound per cubic inch?
Use the reverse factor: 1 hectogram per gallon equals 0.0009543821 pound per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic inch?
Pound per Cubic inch (lb/in3) measures density. A US customary density unit suited to describing dense materials in a small volume. It is classified as a US customary density unit.
What is a hectogram per gallon?
Hectogram per Gallon (hg/gal) is a unit of density.
Is the pound per cubic inch to hectogram per gallon conversion exact?
Yes. Both pound per cubic inch and hectogram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 1047.798375 used above is exact to as many digits as you choose to display.
Where is the pound per cubic inch still used today?
United States
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.